<form id="hz9zz"></form>
    • <form id="hz9zz"></form>
    

      

      <nobr id="hz9zz"></nobr>
      <form id="hz9zz"></form>
      3.   
          
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      asp.net上傳圖片并一起生成縮略圖
                
                  發表時間：2024-02-18             來源：明輝站整理相關軟件相關文章人氣：          
              
      [摘要]<script language="VB" runat="server">Sub UploadFile(sender As Object, e As EventArgs)If FileUp.PostedFile.ContentLength = 0...
      <script language="VB" runat="server">
      Sub UploadFile(sender As Object, e As EventArgs)
      If FileUp.PostedFile.ContentLength = 0 Then
      FileInfo.Visible = False
      Exit Sub
      Else
      FileInfo.Visible = True
      FDisplay1.Visible = True
      End If
      FSize.Text ="上傳文件大小"+ CStr(FileUp.PostedFile.ContentLength/1024)+"KB"
      FName.Text = "已上傳文件名:"+FileUp.PostedFile.FileName+"<br>"+FName.Text
      '寫入數據庫
      on error resume next
      dim myconn as sqlconnection
      dim mycomm as sqlcommand
      dim sql as string
      dim id as integer
      Dim image,anewimage As System.Drawing.Image
      dim width,height,newwidth,newheight as integer
      Dim callb As System.Drawing.Image.GetThumbnailImageAbort
      myConn=New sqlconnection(ConfigurationSettings.AppSettings("數據庫"))
      myconn.open()
      sql="insert into picture (姓名,班級,介紹,屬性) values ('"&request.cookies("dgxyl").values("dgxylname")&"','"&request.cookies("dgxyl").values("dgxylbj")&"','"&trim(request("TextBox1"))&"','"&request("r1")&"')"
      Mycomm=New sqlcommand(sql,myconn)
      mycomm.executenonquery()
      myconn.close()
      Dim myCommand As New SqlCommand("select top 1 id from picture order by id desc", myConn)
      myCommand.Connection.Open()
      Dim myReader As SqlDataReader=mycommand.executereader()
      if myReader.Read() then
      id=myReader("id")
      end if
      myconn.close()
      '保存圖片
      FileUp.PostedFile.SaveAs( Server.MapPath("\classpic\")&cstr(id)&".jpg" )
      '生成縮略圖
      image=System.Drawing.Image.FromFile(Server.MapPath("/classpic/"+cstr(id)+".jpg"))
      width=image.Width
      height=image.height
      if width>height then
      newwidth=250
      newheight=image.height/image.Width*newwidth
      else
      newheight=250
      newwidth=image.Width/image.height*newheight
      end if
      response.write("id="+cstr(id)+"width="+cstr(Width)+";height="+cstr(height)+"  ")
      response.write("newwidth="+cstr(newwidth)+";newheight="+cstr(newheight)+"<br>")
      aNewImage=image.GetThumbnailImage(newwidth,newheight,callb,new System.IntPtr())
      aNewImage.Save(Server.MapPath("/smallpic/"+cstr(id)+".jpg"))
      image.Dispose()

      Dim FileSplit() As String = Split( FileUp.PostedFile.FileName, "\" )
      Dim FileName As String = FileSplit(FileSplit.Length-1)
      Dim Exts() As String = Split( FileName, "." )
      Dim Ext As String = LCase(Exts(Exts.Length-1))
      FDisplay.Text = "<A Target='_blank' HREF='/classpic/"&cstr(id)&".jpg"& "'>查看上傳文件</A>"
      FDisplay1.text="<a href='/picture/default.asp?bj="&cstr(request.cookies("dgxyl").values("dgxylbj"))&"'>返回</a>"
      End Sub
      </script>
      <SCRIPT language=JavaScript>
      <!--
      var requestsubmitted=false;
      function guestbook_Validator(theForm)
      {
      //檢查是否從新提交
      if (requestsubmitted==true){
        alert("你已經提交了留言，請等待服務器應答！");
        return(false);
       }
      requestsubmitted=true;
      return (true);
      }
      //-->
      </SCRIPT>
      <Html>
      <Body BgColor=White>
      <H3 align="center">請正確填寫下面各項</h3>
      <Hr></H3>
      <Div id="FileInfo" Visible="False" runat="server">
       <Asp:Label id="FSize" runat="server"/><br>
       <Asp:Label id="FName" runat="server"/><br>
      <Asp:Label id="FDisplay" runat="server"/>
       <Asp:Label id="FDisplay1" runat="server"/>
      </Div>
      <Form Enctype="multipart/form-data" onsubmit="return guestbook_Validator(this)" runat="server">
      上傳文件
      <Input Type="File" id="FileUp" runat="server" size="20"><br>
      圖片屬性：<input type="radio" value="<%=request.cookies("dgxyl").values("dgxylbj")%>" name="R1" checked>本班<input type="radio" value="全校" name="R1">全校(本班則只在本班顯示，全校則在全校顯示)<P>
      圖片說明：<br>
      <asp:TextBox id="TextBox1" runat="server" Width="233px" Height="141px">
      </asp:TextBox>
              <asp:RequiredFieldValidator id="RequiredFieldValidator1" runat="server" ControlToValidate="TextBox1" ErrorMessage="請輸入圖片說明">
      </asp:RequiredFieldValidator><br>
      <Asp:button id="Upload" OnClick="UploadFile" Text="上傳圖片" runat="server"/>
      </form>
      <Hr>
      <p>注意：</p>
      <ol>
        <li><b>嚴禁上傳污染環境的照片，否則賬號將被刪除！</b></li>
        <li><font color="#808000"><b>請詳細填寫照片說明，圖片說明不詳細將會被視為亂傳圖片，將會被刪除！</b></font></li>
      </ol>
      <p>　</p>
      </Body>
      </Html>
       



              
              
                 
              
                                            
                              		       
                          
                           		  
        
                            
      
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